Strap matcher

Best straps for the Ball Engineer M Marvelight 40mm

20 mm lugs, 40 mm case. Try a strap below; the drawing is to scale.

Ball Engineer M Marvelight 40mm on a steel three-link bracelet
Strap
Colour: Steel
Strap width20 mm
At the buckle16 mm
Lug to lug (est.)47 mm

Looks that work on the Ball Engineer M Marvelight 40mm

Ball Engineer M Marvelight 40mm specs

Case
40 mm × 13.2 mm thick
Lug width
20 mm
Case material
stainless steel
Movement
Ball RRM7309-C, automatic
Water resistance
100 m

From the maker's published figures, gathered with AI help and not yet checked against a watch in hand. Measure your lugs before you buy.

Strap size for the Ball Engineer M Marvelight 40mm

What size strap fits the Ball Engineer M Marvelight 40mm?

The Ball Engineer M Marvelight 40mm takes 20 mm straps: its lug width is 20 mm. A leather strap will usually taper to 18 mm at the buckle.

How big is the Ball Engineer M Marvelight 40mm?

The case is 40 mm across, and about 47 mm from lug tip to lug tip.

What strap looks best on the Ball Engineer M Marvelight 40mm?

Good options are an olive NATO strap, a tan leather strap, a taupe suede strap. Try them all on the drawing above.

Sizes come from published specs. Check yours before you buy: how to measure lug width.